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I check when I'm syncing in iTunes, usually each morning.

I don't. I wait until I plug it into iTunes and iTunes shows that there are updates. I really wish there was a way to read the update description in iTunes.

If you click on the Apps icon in the list of apps that have updates it brings you to the Apps description page that lists the details of the update.
 
Generally I check once a day, possibly more if I know an app I have is getting a major update (i.e. any of my Twitter apps).
 
Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7)

Too often
 
I never check on purpose. If I'm in the app store just browsing, the little red icon will show up sometimes and I'll update then.
 
I check about 2-3 a day.

Although I'm glad to find out I'm not alone, this just proves that many of us need help. You know, there's a lot of drug addicts out there that are not alone with their issues too. I need to seek help. :p :D
 
i never really check for updates. I update my apps whenever I sync my iphone or whenever I get bored and browse the app store for new apps.
 
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